Roofing and siding element and method of producing contrasting effects thereon



N. P. HARSHBERGER Filed April 11. 1930 l Il Aug. 7, 1934.

ROOFING AND SIDING' ELEMENT AND METHOD OF PRODUCING CONTRASTING EFFECTSTHEREON Patented Aug. `7, 134

lROOFING AND SIDING ELEMENT AND METHOD 0F PRODUCING CONTBASTING EFFECTSTHEREON Norman P. Harshbergen Pasadena, Calif., as-

signor to Bakelite Building Products Co. Inc., New York, N. Y., acorporation of Delaware Application April 11, 1930, Serial No. 443,602

s claims.

(Cl. 91-67-9) f This invention relates to improvements in 6. In thestrip of material shown, it is desired t roofing and siding elements andmethod of producing contrasting effects thereon.

In the composition roofing art, it is4 frequently desirable toproducedesigns or lines of demarcation on roofing strips`to simulate aplurality of individual shingles. Heretofore, said designs have beenformed mainly by coloring certain portions of the surface differentlyfrom other portions thereof. Lines of demarcation have 'also beenproduced by depressing certain por-v tions of the surface to Acreateshadow effects. However, when a material is depressed which is surfacedwith mineral 'matter of the usual 5.. coarseness, the said mineralmatter is likely to rupture the felt base and to weaken the material.

It is one of the objects of this invention to provide improved roofingand siding material and method of producing contrasting effects Ythereonin which lines of demarcation are formed by depressing portions of thesurface, but in which no weakening of the felt base results fromcreating said depressed. portions.

A`more specific object of this invention is to provide an article andmethod of the class described in which the material is surfaced withrelatively fine mineral particles in the areas which are' to bedepressed, so that the'fabric base will not be cut into as is now thecase where pressure is 4exerted upon the coarse minf eral material.

A further object of thisinventions to provide roofing and sidingmaterial and method of producing the contrasting effects thereon whichis simple, effective and well adapted for the purpose described.

With the above and other objects in view, the invention consists of theimproved roofing and siding material and method of producingccnltrasting effects thereon, and all its parts and combinations as setforth in the claims, and all equivalents thereof.

Ink the accompanying drawing illustrating one embodiment .ofthepreferred form of the in- 45.. vention, in which the same referencenumeralsv entire face, the said coarse particles would dig to producektransverse lines of demarcation/so 4that the strip will simulate aplurality of individual shingles. Accordingly, the major portion of theface of the strip is covered with a layer of crushed slate ormineralmaterial 7 of the usual coarseness, Narrow areas 8 are protectedduring this step of the method. ASubsequently `the protecting means isremoved and the areas 8 are thenl covered with comparatively neparticles of mineral material 9. Next, pressure is exerted on the stripby any suitable means to form recessed portions 10, in which thebituminous material is depressed, and in which the fine particles ofmineral material are pressed down with said bituminous material adjacentthe felt base. Due to the fact that fine particlesof mineral matter areemployed to cover the "portions of the surface which are'to bedepressed, these fine particles will not dig into the fabric base toweaken the same when pressure is exerted to create the recesses 10. If acoarse mineral matter such as is nowemployed -in standard practice, wereused to cover the into the felt base to weaken the latter along thedepressed lines.

In the resulting product, the lines of demarcation will stand outprominently in view of theA fact that a shadow effect will be'crated,'and in view of the fact that the fine mineral material thereinwill give a slightly different eiect from the mineral material of theusual coarseness which is used on the other portions of the strip.Substantially.y the same result can be produced by using a comparativelyfine stone, preferably in a double layer, over the entire face of theweb, and by depressing portions of the surface along desired lines or indesired areas as above described. With this method, there will be nodanger of cutting into' the fabric base, and the shadow effects will beproduced as effectively. 'Ihere will not, however, be the slightdifference of appearance between the mineral particles in the depressedareas and the mineral particles on the rest of the strip as 'in thepreferred form where mineral material of two degrees of coarseness isemployed. l y From the foregoing description, it may be seen that a verydesirable method has been provided in which contrasting effects areproduced in a very novel manner by depressing portions of the surface,and in which no weakening of the fabric base results from creating saiddepressed portions.

What I claim is:

1. As an article of manufacture, roonng and siding material comprising'a fibrous base presenting a granulated-particle surface secured to saidbase byfaebituminous adhesive layer. said surface presenting depressedgareas, said depressions extendingf/into the adhesive layersubstantially close to but not into the base, and said depressed layerpresentinggranulated material of greater ilneness than that on theundepressed portions and being substantially on a level with thedepressed bituminous surface, the

granular surfacing particles to different areas of the surface ofl asaturated and bituminous `coatedfabric base, and `depressingl the areassurfaced with the small sized particles until the l particles are closeto' the fabric base to accentuate the contrast, the depth of thedepression being limited by the size of the particles' to avoidpuncturing the fabric.

3. A` composition roofing and siding element comprising a saturatedfibrous base having a bituminous coating material surfaced with largeand small sized granular surfacing particles applied to different areas,the parts of the surface covered with the small sized particles being depressed close to the fabric and the depth of the depression limited bythe size of the particles to avoid puncturing the fabric.

NORMAN P. HARSHBERGER.

